May weather forecast
Cairns, Australia

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Weather in May

May demonstrates a significant drop in temperature continuing till winter. The climate in Cairns during May is characterised by dry and sunny conditions with a remarkable decline in sea temperature from 27.8°C (82°F) to 26.2°C (79.2°F). A less humid atmosphere starts to settle in the city, therefore the weather allows for attractive tourism activities. The Great Barrier Reef showcases mesmerising vistas under the May sun. The tropical landscape begins to prepare itself for the winter.

Temperature

The transition into May in Cairns reveals an average high-temperature of a still moderately hot 24.9°C (76.8°F), mirroring a close resemblance to April. During May, nights in Cairns cool slightly to an average low of 20.7°C (69.3°F).

Humidity

The average relative humidity in May in Cairns is 79%.

Rainfall

In Cairns, in May, it is raining for 13.8 days, with typically 27mm (1.06") of accumulated precipitation. In Cairns, during the entire year, the rain falls for 167.3 days and collects up to 652mm (25.67") of precipitation.

Sea temperature

In Cairns, Australia, the average seawater temperature in May is 26.2°C (79.2°F).
Note: Swimming, diving, and other water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are highly enjoyable and provide prolonged comfort without unease.

Daylight

In May, the average length of the day is 11h and 20min.
On the first day of May in Cairns, sunrise is at 6:29 am and sunset at 5:58 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 5:50 pm AEST.

Sunshine

In Cairns, Australia, the average sunshine in May is 6h.

UV index

The average daily maximum UV index in May in Cairns is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 6 in May suggests the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Take heed! Reflections of sand and water make the Sun's UV rays stronger.
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Frequently asked questions

What are May temperatures in Cairns?

In May, the average high-temperature and low-temperature are 24.9°C (76.8°F) and 20.7°C (69.3°F) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in April is calculated to be 30°C (86°F).

What is the average humidity in May in Cairns?

The average relative humidity in May in Cairns, Australia, is 79%.

How much does it rain in Cairns in May?

In Cairns, in May, during 13.8 rainfall days, 27mm (1.06") of precipitation is typically accumulated.

What is the water temperature in May in Cairns?

In Cairns, Australia, in May, the average water temperature is 26.2°C (79.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Cairns have in May?

In May, the average day length in Cairns, Australia, is 11h and 20min.

When are sunrise and sunset in May in Cairns?

On the first day of May, sunrise is at 6:29 am and sunset at 5:58 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 5:50 pm AEST.

How long on average sun shines in May in Cairns?

The average sunshine duration in May in Cairns is 6h.

What is the UV index reading in May in Cairns?

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in May
Cairns, Australia

Average temperature in May - Cairns, Australia
  • Average high temperature in May: 24.9°C

The warmest month (with the highest average high temperature) is February (29.4°C).
The month with the lowest average high temperature is July (23.2°C).

  • Average low temperature in May: 20.7°C

The months with the highest average low temperature are January and February (24.3°C).
The coldest month (with the lowest average low temperature) is August (18°C).

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Average pressure in May
Cairns, Australia

Average pressure in May - Cairns, Australia
  • Average pressure in May: 1015mbar

The month with the highest atmospheric pressure is July (1016.8mbar).
The month with the lowest atmospheric pressure is January (1007.6mbar).

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Average wind speed in May
Cairns, Australia

Average wind speed in May - Cairns, Australia
  • Average wind speed in May: 17.2km/h

The windiest month (with the highest average wind speed) is May (17.2km/h).
The calmest month (with the lowest average wind speed) is February (11.2km/h).

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Average humidity in May
Cairns, Australia

Average humidity in May - Cairns, Australia
  • Average humidity in May: 79%

The month with the highest relative humidity is March (81%).
The months with the lowest relative humidity are September and October (74%).

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Average rainfall in May
Cairns, Australia

Average rainfall in May - Cairns, Australia
  • Average rainfall in May: 27mm

The wettest month (with the highest rainfall) is January (162mm).
The driest month (with the least rainfall) is September (9mm).

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Average rainfall days in May
Cairns, Australia

Average rainfall days in May - Cairns, Australia
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is January (22.4 days).
The month with the least rainy days is September (7.2 days).

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Average sea temperature in May
Cairns, Australia

Average sea temperature in May - Cairns, Australia
  • Average sea temperature in May: 26.2°C

The best month for swimming (with the highest average sea temperature) is January (29.5°C).
The coldest month (with the lowest average sea temperature) is July (23.8°C).

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Average daylight in May /
Average sunshine in May
Cairns, Australia

Average daylight in May / Average sunshine in May - Cairns, Australia
  • Average daylight in May: 11h and 2min

The month with the longest days is December (Average daylight: 13h and 6min).
The month with the shortest days is June (Average daylight: 11h and 6min).

  • Average sunshine in May: 6h and 0min

The months with the most sunshine are October and November (Average sunshine: 10h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).

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Average sunshine days in May
Cairns, Australia

Average sunshine days in May - Cairns, Australia
  • Average sunshine days in May: 12.5 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is January (6.3 days).

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Average UV index in May
Cairns, Australia

Average UV index in May - Cairns, Australia
  • Average UV index in May: 6

The months with the highest UV index are January, February and November (UV index 7).
The month with the lowest UV index is July (UV index 5).

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Average cloud cover in May
Cairns, Australia

Average cloud cover in May - Cairns, Australia
  • Average cloud cover in May: 44

The months with the most cloud cover are January and March (Cloud cover 45).
The month with the least cloud cover is September (Cloud cover 28).

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Average visibility in May
Cairns, Australia

Average visibility in May - Cairns, Australia
  • Average visibility in May: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Cairns, Australia

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